Motion Capture for Runners

Transcription

1 Motion Capture for Runners Design Team 8 - Spring 2013 Members: Blake Frantz, Zhichao Lu, Alex Mazzoni, Nori Wilkins, Chenli Yuan, Dan Zilinskas Sponsor: Air Force Research Laboratory Dr. Eric T. Vinande Facilitator: Dr. Selin Aviyente

2 Outline Introduction Objective and Benefits Proposed Solution Design Specification Project Components System Design Components Testing Risk Analysis Project Roles Budget Schedule

3 Introduction The efficiency of a runner s technique is directly proportional to the quality of their posture. Different running conditions significantly changes the form of the runner (running uphill, jogging, sprinting). Similar studies focused on measurement and analysis of running form using three dimensional acceleration and gyroscopic sensors.

4 Objectives Capture running motion by choosing proper sensors Develop recording system that receives data from sensors and sends data wirelessly to processor body-worn controller real-time processing on external PC Analyze motion data and provide real-time feedback to improve runner efficiency Analogous to understanding flexible structures on aircrafts and spacecrafts

5 System Benefits Direct benefit of maintaining proper running form Improves overall performance, less chance of injury Real-time feedback with indicator for the runner Allows for immediate changes of form Software to compare runner's form to an elite runner Provides a baseline model This motion analysis and feedback is applicable to other systems

6 Proposed Solution Body-worn Sensors Inertial Measurement Units (IMUs) Accelerometer Gyroscope Sensors wired to the body-worn Controller Sensors and controller sewn into bodysuit Used for treadmill purposes Body-worn Controller Preliminary data processing, time-stamping Wireless Communication Communication between body worn controller and PC Xbee, Wireless Real-time Processing Process data on PC Comparison software to compare with elite runner data Real-time Feedback Body-worn indicator: LED indication of proper or improper form

7 Design Specifications Battery Size Life Sensors Number of axes Power consumption Sampling Rate Size Wireless Bandwidth Range Cost

8 Project Components IMU (Inertial Measurement Unit) - Device that measures velocity, orientation and gravity - Consists of an accelerometer, gyroscope and a compass - 9-axis measurements Arduino Microcontroller - Acquires data from the IMU sensors - Synchronizes connected sensors - Arduino UNO, and Arduino Due

9 Project Components ZigBee (XBee) Communication - Connects Arduino and PC wirelessly - Connects the PC to body-worn feedback controller Arduino Micro SD Shield - Requires micro SD card - Connects to Arduino microcontroller - Provides additional memory for sensor data

10 Project Components Arduino Software - Requires setup of I2C bus - Timestamps acquired data - Transmits data through Xbee communication to PC PC Software - Acquires data from arduino - Calculates position of sensors using algorithm -Matlab, LabView, or Processing

11 System Design

12 Testing Sensors Each sensor capturing data Sending directly to the Arduino board Arduino Time-stamping data properly Consistent data acquisition Communication Fast, noiseless wireless communication (Arduino to PC) Wire communication between IMUs and Arduino Easily understood and accurate feedback Software Testing Arduino PC acquisition data Comparison software consistent

13 Risk Analysis Sensors Power consumption Sampling rate of sensors Arduino Timestamping of acquired data Communication Bandwidth of communication devices Continuity of data acquisition (memory limitation) Transmission of data Synchronization Range Feedback Ease of interpreting form assessment

14 Project Roles

15 Budget

16 Schedule Scheduling Breakdown Fabrication Software Interfacing Testing

17 Summary Motion Capture IMUs placed on body detect motion Arduino receives data and transmits to PC Analysis PC has elite runner reference motion Comparison Software Feedback Immediate real-time feedback to the runner for improper or proper running form

18 Thank You and Questions?